CVT is my choice. Mitsubishi has highest millage ratting.
A number of people would not mind a CVT however the simple answer is that CVT's are more expensive than the AMT and will at best offer the same fuel mileage as the AMT.
Personally I would rather have the AMT, and shift it myself if necessary, or have a traditional automatic. I have driven thousands of miles in CVT equipped vehicles and absolutely hate the way they operate as in my opinion they disconnect a driver from the operation of the drivetrain.